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Symptom Regulation Induced by Chicory Yellow Mottle Virus Satellite‐Like RNA
Author(s) -
Piazzolla P.,
Vovlas C.,
Rubino L.
Publication year - 1986
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1986.tb00868.x
Subject(s) - rna , virology , biology , satellite , physics , biochemistry , gene , astronomy
CYMV‐T, CYMV‐C and CYMV‐RS are three strains of CYMV, a nepovirus isolated from chicory in Southern Italy. They are serologically indistinguishable, but display different electrophoretic and analytical ultracentrifugation patterns. In fact the RNAs obtained from CYMV‐T, when analyzed in 2.4% polyacrylamide cylindrical gels, showed the presence of a 170,000 mol. wt. satellite‐like RNA (CYMV‐T Sat RNA) and several other RNAs, whereas CYMV‐RS gave only the genomic RNAs and CYMV‐C, in addition, some ofthe RNAs present in CYMV‐T but not the Sat RNA. When these three strains were assayed on Nicotiana glutinosa L., CYMV‐C and CYMV‐RS elicited typical necrotic rings, whereas CYMV‐T infections were symptomless. The conclusions were drawn that CYMV‐T Sat RNA is another low mol. wt. RNA able to display viral disease regulation and that CYMV‐T, CYMV‐C and CYMV‐RS could represent an example of natural oscillation among different stages of RNA satellite emergence.